Sierra Instruments, Inc.

- Model 100 HP - Ultra-High Pressure Gas Mass Flow Meters & Controllers

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Precision flow measurement and control at ultra-high gas pressure is among the most challenging applications in the flow industry. Leaks, gas behavioral changes and unpredictable valve control can all lead to reduced performance.

Sierra's proprietary ValFlex™ control valve design uses high-impact valve seat material assuring smooth interaction with the valve orifice in ultra-high pressure applications. A strong and flexible control valve with accessible PID valve tuning assures best speed and reliability at high pressures. Custom valve orifice sizing yields full-range stability.  

Designed to overcome the challenges of high pressure mass flow control, the SmartTrak® 100HP:

  • Contains an all-welded sensor seal and  innovative new ValFlex™ valve design
  • Combines high performance with a wider, more robust flow body
  • Features a state-of-the-art high-pressure calibration facility

For lab researchers and systems integrators/OEMs, the SmartTrak 100HP thermal mass flow controller is a true digital MFC designed to deliver smooth, stable, accurate, and repeatable gas mass flow control.  Unaffected by upstream gas temperature and pressure fluctuations, gas mass flow control is direct and unequivocal.

  • Powerful high-pressure measurement and control up to 5000 psig (345 barg)
  • Proven accurate mass flow control with high-pressure calibration facility
  • Guaranteed high-pressure performance with high-impact, carbon-enforced valve seat
  • Make adjustments in the field with pushbutton display
  • Flexible Integration with a wide range of digital communication protocols

  • Ideal for pilot plants, hydrogenation reactors, and autoclave processes
  • ValFlex™ valve seat technology that is high-impact and carbon-reinforced
  • Lowest differential pressure requirement at 5 psid (0.345 bard)
  • Special high-pressure rated seals minimize gas permeability
  • User-friendly, multifunctional pilot module display interface is front-mounted, hand-held or remote mounted
  • Easy field adjustment with pilot module display interface that allows you to change:
    • Flow rate
    • Engineering units
    • Set zero, span and full scale
  • Follows Primary Standard Calibration & NIST traceability
  • Proprietary, frictionless-hovering, direct-acting control/shut-off valve
  • Precision digital PID valve control; no valve tuning or adjustment
  • Free user software
  • Control functions also available from PC via RS-232
  • Provided source code for RS-232 communication
  • Upgrade to Compod™ to run small-scale pilot plants without expense of DCS or PLC system
  • Enhanced networking capability, including two digital relays, totalization, inputs, and display
  • Wide range of digital communication protocol options: Modbus, ProfibusDP, Foundation Fieldbus

  • Supports all clean gases, including toxics and corrosives
  • Accuracy of +/- 1% of full scale
  • High Accuracy of +/- 0.5% of full scale available
  • Repeatability of +/- 0.2% of full scale
  • Ultra high pressure to 5000 psig (345 barg)
  • Rated burst pressure of 7500 psig (517 barg)
  • Flow range from 0 to 10 sccm to 0-20 slpm (nlpm)
  • Gas/Ambient Temperature: 32 to 122°F (0to 50°C)
  • Response time: 5 seconds (typical) to within +/- 2% of final value (includes settling time), faster or slower available upon request
  • Single-sided 24 VDC power supply
  • Seals: 90A Viton®
  • 316 stainless-steel construction
  • Analog or digital signals included: RS-232, RS-485 (Multi-drop), 0/4-20 mA, 0-5, 1-5, 0-10 VDC
  • Digital communications solutions included: Foundation FieldbusModbus RTU, and Profibus DP
  • CE approved

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